E-50 Tank DestroyerDesigned as a replacement for the Jagdpanther. The chassis would have been the same as the one used for the E-50, but the crew compartment would have been moved to the rear. Its main gun would have been the same 128mm cannon that had been used for the Jagdtiger. The main goal of the E-series was to create as many parts as possible that were interchangeable between the series-tanks and thus make spare parts supply easier.